Design of single phase inverter for photovoltaic application controlled with sinusoidal pulse width modulation

Abstract

<p>The application of fossil fuels likes coal, oil and gas gives the enormous environmental impact and hazardous effects to the earth. Hence, renewable energy has become the most tremendously friendly methods to generate the electricity without pollution and emissions. Inverter is a power electronics device which is used to convert Direct Current (DC) into Alternating Current (AC). The conventional inverter no longer fulfills the requirement of reducing harmonic distortions plus it causes global warming and greenhouse effect. For increasing the efficiency and reliability of the system, the PV inverter becomes a vital part in the conversion of DC to AC output. This research thus presents a single phase photovoltaic inverter controlled with sinusoidal pulse-width-modulation (SPWM) and low pass filter connection between the inverter and the utility grid to reduce the harmonics due to intermittent nature of the renewable energy sources. Unipolar and Bipolar switching scheme are applied to control the magnitude and frequency of output voltage and result of both unipolar and bipolar are compared. The simulation of the proposed technique is executed by using Matlab/Simulink.</p>

Implementation of space vector modulation for two level Three-phase inverter using dSPACE DS1104

“…Various pulse-width modulation (PWM) techniques have been developed for industrial applications. The most widely used PWM schemes for three-phase voltage source inverters are carrier based sinusoidal PWM [6][7][8][9][10][11][12][13][14] and space vector PWM (SVPWM) [15][16][17][18][19][20][21][22][23]. The output voltage per phase for a sinusoidal PWM based three phase converter is limited to 0.5Vdc (peak value) and the line-to-line RMS voltage is 0.612Vdc.…”

Optimal power scheduling of renewable energy sources in micro-grid via distributed energy storage system

“…The micro-grid will use only islanded mode where the micro-grid will be standalone without connecting it to the grid, in order to provide electricity for the loads where this is involving of the reliability of the micro-grid system as well as its security. The micro-grid should be able to supply specific voltage for the electricity by using the distributed generators that will follow the needs of the users with the aid of some auxiliary devices [10,13].…”

“…In this literature, power scheduling of RESs using the battery storage for reliable operation of MGs with respect to the voltage of the system is not discussed. Also, most of the work found in this literature has not considered individual needs of DESS although the power flow management is through the DESS in MGs, for example, SOC limits [13][14][15][16][17].…”

Nine-level Cascaded H-Bridge Multilevel Inverter for Photovoltaic Sources Based on Hybrid Active Filter

“…High power device has been employed in industrial applications in recent years due to megawatt power level for many medium and high voltage applications [1]. Multilevel power converters are being used as an alternative solution in these applications as a result of this situation [2].…”